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Have you ever woken up to find a wet, sticky spot on your underwear or PJs? At first you may have worried that you wet the bed. But if you're going through or have already gone through puberty, you probably had a wet dream.
Doctors call wet dreams "nocturnal emissions." Nocturnal means "at night." Emission is another way to say release.
Wonder what wet dreams are and why you have them? Here are the answers to frequently asked questions that teens have about wet dreams.

When does the penis grow?

Your penis grows longer and wider during puberty. That's the time major changes occur in the body that make you look more like a man and less like a child. Most guys start puberty between ages 10 and 14.

But, puberty happens at different times for everyone. You may have a penis that's grown to its full size as early as age 13 or as late as age 18.

When does a penis stop growing?

Your penis stops growing when you finish puberty. Exactly when that happens, though, varies from person to person. Everyone develops at a different pace. You may take longer than your friends or less time than them to finish puberty. But by 16, your body and its parts should be close to your adult size.

Is my penis size normal?

There is no such thing as a "normal" penis size. The size of your penis depends on your genes, just like the size of your hands, feet, and eye color. Keep in mind, penis size has nothing to do with manliness or sexual ability.

Can I change my penis size?

No. You can't change the size of your penis. Despite what you may hear, no exercises, vitamins, or diets can change the size of your penis or make it grow faster.

What is a morning erection?

An erection is when your penis fills with blood and becomes hard. A morning erection is an erection you wake up with in the morning.

Morning erections are very common. In fact, most guys have about three to five erections each night while they sleep. They just don't know it.

What is a wet dream?

A wet dream is when you ejaculate (release semen from your penis) in your sleep and wake up wet. Wet dreams often occur from having sexual dreams. Sometimes, though, they just happen. Wet dreams are a normal part of puberty. Usually, they stop as you get older.